131653-16-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131653-16-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,6,5 and 3 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 131653-16:
(8*1)+(7*3)+(6*1)+(5*6)+(4*5)+(3*3)+(2*1)+(1*6)=102
102 % 10 = 2
So 131653-16-2 is a valid CAS Registry Number.
131653-16-2Relevant academic research and scientific papers
Alkaloids from Annonaceae 93. First synthesis of a meta-disubstituted aporphine
Roblot, F.,Hocquemiller, R.,Cave, A.
, p. 258 - 267 (2007/10/02)
The synthesis of a new aporphinoid alkaloid, substituted on the 9 and 11 positions, is reported.An unexpected reactivity has been observed for several intermediates.It has been attributed to the position of the methoxy groups with regard to the nitro group.
